adams



(No Model.)

2 Sheets-#Sheet 1. J. M. ADAMS 8v W. F. CARTER.

ORE lCONGENTRATQR.

Patented Mar. 9, 1886.

(No Model.) v v Y sheetssheet 2.

J. M. ADAMS an W. P. CARTER.

ORE GONGENTRATGR. No. 337,471. Patented Mar. 9,1886.

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n if A- llNiTED STATES PATENT OEEICEc JOI-IN M. ADAMS AND WILLIAM F. CARTER, OF SAN FRANCISCO, CALIFORNIA.

ORE-CONCENTRATOR.-

SPECIFICATION forming part of Letters Patent Nci. 337.471, dated March 9. 1886.

Application filed October 21,1885. Serial No.l80,545. (No model.)

To @ZZ whom it may concern:

Be it known that we, JOHN M. ADAMS and WILLIAMF. CARTER, each of the city and county of San Francisco and State of California, have invented an Improvement in Ore- Concentrators; and we hereby declare that the following is a full, clear, and exact description of the same.

Our invention relates to that class of ore-.y

concentrators in which is employed an endless traveling belt upon a frame or table to which a shaking or vibratory motion is imparted 5 and our invention consists in certain details of construction and combination of parts, as we shall hereinafter fully describe and claim.

The object of our invention is to provide a concentrator which, by reason of the variable and modied motions which. are imparted to it, is adapted for more general use or application than the ordinary concentrators to which a single movement is given. Different kinds of ore and other material may, therefore, be treated on our concentrator and be subjected to the most advantageous motions for the end in view.

A further object is to provide a simple mechanism for the uphill travel of the belt.

Referring to the accompanying drawings, Figure l is a perspective view of one side of our concentrator. Fig. 2 is a plan of the concentrator. Fig. 3 is a vertical cross-section through the driving-drum, showing vthe back gearing.

A is the bed-frame of the machine, from which is supported upon yielding or spring standards a the inclined table B, which carries in its upper end the driving-drum C, by which the endless belt D is caused to travel. The course of the endless belt is the same as in concentrators of this class-namely, around the upper drum down into a tank underneath, (not here shown,`) and around a drum at the lower end of the frame.

E is the main driving or power shaft, mounted in suitable bearings on one side of and parallel with Vthe bed-frame. This shaft carries the driving -pulley c, and has` cranks e', as shown. Mounted transversely on the bed- 5o frame under the table B is a shaft, F, which has a fly-wheel, f, at one end, and is formed with cranks f. Upon the driving-shaft E is a beveled gear, G, which meshes with a beveled gear or pinion, G', on the shaft F. From the cranks e of the driving-shaft E extend the connecting bars or straps H transversely under the table, and are secured thereto at the points e, Fig. 2.

From the cranks f of the transverse shaft F extend bars or straps HQ parallel with the table B and connected therewith at the points f2, Fig. 2. These bars or straps are connected with their cranks and with the table in the following manner: They are pivoted to two-part sleeved boxes I by means of vertically arranged pins z', whereby they are adapted to have a slight movement in a horizontal plane to accommodate themselves to the movement of the table. The boxes I are iitted over the cranks of the shafts E and F. The other ends of the bars or straps are connected at the points e2 and f2 by means of vertical pins, whereby they may accommodate themselves to the movement of the table in the same manner as at their first ends.

It will now be observed that the rotation of the shaft E communicates, through its cranks e and the bars or strapsH, a lateral vibration or side shake to the table, while through the beveled gears G and G', the cross-shaft F, its cranks f', and bars or straps H the table has imparted to it a longitudinal vibration or end shake. The combination of these two movements, acting simultaneously, enables us, by variations in the crank-centers and in the relative size of the gears G G', to produce variable and modified motions, as we shall now explain.

In Fig. l it will b e seen that the gear or pinion G is one-half as large and has one-half as many teeth as the gear G, so that a complete rotation of the latter gear gives tworotations to the former one. It will also be seen that the cranks of the shafts Eand F are what is known as quarteringthat is to say, their starting-centers are removed by ninety degrees. In this igure the cranks care shown at their outward limit or stroke, while the cranks f are attheir top centers. This quartering of centers of the cranks, together with the proportional or relative sizes of the gears G G, results in imparting to the table a motion which may be correctly described as that of a figure B-that is to say, each point in the table, and consequently each point in the traveling belt carried by the table, describes a figure 8. Now, by leaving the cranks quartering, as described, and changing the gear G' for a gear which has the same number of teeth as the gear G,we cause each poi nt of the table to move through a perfect circle; then, by leaving the gears of the same sizeand making the cranks of the two shafts on Ithe same eenter, we obtain a diagonal motionin a straight line at an angle of forty-five degrees. Between these limits, by changing the relative centers of the cranks, we may obtain modifications or variations between the complete circle and the line at an angle of forty-ve degrees, and by changing the relative sizes of the gears G G we may modify and vary the compound movement between the figure 8 and that of the circle.

As the drum Gis carried by the shaking table,itis evident that drivingmechanism must be employed, which will not interfere with or be affected by the various motions of the table. The mechanism for this purpose is as follows: Referring to Fig. 3, it will be seen that the shaft J passes loosely through the hubs or gudgeons c of the driving-drum O. On one end of the shaft J is a pulley, K, which is attached to the shaft by means of amovable key,

7i', so that the pulley can run loose, when desired, or be fastened to the shaft. Upon the driving-shaft E, Figs. 1 and 2, is feathered a cone-pulley, L. Bivoted to the bed-frame A is an arm, M, which carries in one end ashaft, m, upon which run loosely two small pulleys, Nand N', the outer and inner one,respectivel y. Secured to the bed-frame is an arm, O, in one end of which is a pulley o, and a pulley, o', in the other end. A belt, I?, passes over the cone-pulley under the two looselyrunning and suspended pulleys N N', under the two pulleys o o', and over the driving-pulley K. The pivoted connection of the pulleys N N' causes them to act as tighteners for the belt, and there being only a belt or flexible connection between the driving shaft and the pulley K of the drum, said drum may follow the various movements of the table on which it is mounted without interference from the driving mechanism. In order to vary the speed of the driving mechanism, we have a screw spindle, Q, one end of which is connected by an arm, q,with the hub of the conepulley L. By operating this screw the conepulley may be pushed along the shaft E away from the upper end of the machine, thus presenting a larger diameter to the belt L, and thereby causing a more rapid travel, or said pulley may be moved in the opposite direction with the opposite effect. The swinging pulleys N N' permit this movement of the eonepulley, while still keeping the belt tight, and they adjust themselves by moving in or out on their shaft. This direct power, which is applied to the drum, would result in too great speed for the purposes of concentration, and in order to reduce this speed we baekgear the drum, as shown in Fig. 3.

On the end ofthe shaft J is a small pinion,

o', .which meshes with a large gear, It, sai@ gear carrying a small pinion, r',which mcshc back with the large gear R' on the hub or gudgeons c of the drum C.

It is not essential that the shaft J should pass through the drum, as it may cross in other positions.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is

l. In an ore-coneentrator, the combination of the table B and the endless traveling belt D thereon,with mechanism comprising powertransmitting devices, and longitudinal and transverse bars or straps for imparting to said belt and table a vibrating motion, the result of lineal motions at right angles acting simultaneously the one transversely of the table and the other parallel4 with its length, substantially as herein described.

2. In an ore-concentrator, the table B and the endless traveling belt D thereon, in combination with the power-shaft E,parallel with the table7 and the shaft F, transverse of thev table, miter-gears between said shafts, cranks on the shafts, and transverse and longitudinal bars or straps connecting the cranks with the table, whereby a motion is imparted to said table, the result of initial movements at right angles, substantially as herein described.

8. In an ore-concentrator, the table B and endless traveling belt D thereon, in combination with power'shaft E, parallel with the length of the table, a shaft, F, transverse of said table, the cranks e' f' on said shafts quartering with each other, and the bars or straps H H', connecting said cranks with the table, the

gears G on the shaft E, and the gear G' on shaft` F, said gears bearing the proportions to each other of two to one, substantially as herein described.

4. In an ore-concentrator, the table B and endless traveling belt D thereon, in combination with shaft E and transverse shaft F, mitergears between said shafts, cranks quartering with each other on said shafts, and the bars or straps H II', connecting the cranks with the table, substantially as herein described.

5. In an ore-eoneentrator, the shaking table B, having drum G, and the endless traveling belt D on said table and drum, in combinatiou with the mechanism for causing the belt to travel, consisting of a shaft connected with the drum, a pulley, K, on the shaft, and pulley L on the driving-shaft, swinging tightener-pulleys under the pulley L, and guidepulleys under pulley K, and an endless belt, I?, substantially as herein described.

6. In an ore-concentrator, the shaking table B, having drum C, and the endless beltD on said table and drum, in combination with the shaft J, geared to the drum, the pulley K IIO on the shaft, the driving-shaft E, the conepulley L on said shaft, the swinging. tightenerpulleys N N', and the guide-pulleys o o' and` the endless belt P, all arranged and adapted to operate substantially as herein described.

-7. In an ore-concentrator, the shaking table B, having drum C and the endless belt D, in combination with the shaft J, having pulleys K, baclngearing between said shaft and the drum, the driving-shaft E, the cone-pulley L'on said shaft, the swinging tightenerpulleys N N', and the guide-pulleys o o', and the belt P, substantially as herein described. 8. In an ore-concentrator, the shaking frame B, having drum C, and endless belt D thereon, in combination with the shaft J, connected JOHN M. ADAMS. WILLIAM F. CARTER.

Witnesses: A

S. H. NoURsE, H. C. LEE. 

